Inking roll for printing presses



June 23, 1925. 1.54:3,029 w. M. REECHART INKING ROLL FOR PRINTINGPRESSES Filed Sept; 19. 1921 INVENTOR.

1/17/1220? M Ke/c/mrf ATTORNEW Patented June 23,

WILLIAM M. REICHART, or" CLEVELAND,

COMPANY, OF CLEVELAND, onto, A CORPORATION OF OHIO;

I mxmer ROLL FOR PRINTING rnnssns. I

' Application filed September 19, 1921. Serial,N'o. -501,564. L

To all whom it may concern:

Be it known that I, VVILLI'AM, M. ,REI- CHART, a citizen of the UnitedStates, and a resident of Cleveland,"county of Cuyahoga, and State ofOhio, have'invented a new and useful Improvement in Inking Rolls forPrinting Presses, of which the following is a specification, theprinciple of the invention being herein explained. and the best mode in:which'I have contemplated applyingthat principle, so as to distinguishit from other inventions. I

The inking rolls used in printing presses, as is well known, are formedof a special, more or less resilient, composition, and due to thecharacter of such composition it is not only difiicult to insureuniformdiameter vof said rolls. in the manufacture of same, but suchdiameteris apt to change under conditions of use. Inasmuch as therollsin the course of their passage over the form are supported on metalrollers running on tracks, or equivalentsupports, such rollers beingordinarily merely the exposed ends of the metal base to which theaforesaid composition materialis attached, it will beiseen that anyvariation-in the diameter of the roll itself will cause avariation' inthepressure with which .it contacts with the form. This of course isobjectionable for reasons that need'not'be detailed, andthe object ofthe present invention, accordingly, is the provision of means in thenatureof an ad-' justable roller on the ends of such inking roll wherebythe latter may be caused to bear with uniform pressure despite changesin diameter. 7

To the accomplishment of the foregoing and related ends, said invention,then, consists of the means hereinafter fully described and particularlypointed out in the claims,

the annexed drawing and the following deradial apertures 14 formed inthe outer scription setting forth in detail certain mechanism embodyingthe invention, such disclosed means constituting, however, but one ofvarious mechanical forms, in which the principle of the invention may beused.

In said annexed drawing Fig. 1 is abroken elevational view of an inkingroll of the class described, one end thereof and the correspondingsupporting roller being shown in axial cross-section; Fig. 2 is a viewsimilar to Fig. 1, but show ing only one end of the inking roll andadjacent supporting roller, the latter being shown in di'fierent--adjusted position; and Fig. 3 is a'transverse section through suchsupporting. roll, the plane of the section being indicated by the line 3'3, Fig. 1'.

As illustrated in Figs. 1 and 2,;the inking roller is shown as passingover the form 1, which is supported on the bed 2 of the press; It is 1 amatter of indifference of course whether the latter be of the so-calledGordon or platen type, although the'swing arms 3, to which the ends ofthe roll are shown as being attached, are characteristic of such type. iThe roller itself comprises a metallic core 4, the body. of, which issurrounded. by a layer 5 of the composition previously referredto," suchcore being mounted upon'a spindle 6, the'ends of which arerotatably heldinor otherwise attachedtothe ends ofarms 3... I

'The rollers for supporting the inking roll are mounted onsuch spindleends, between the ends ofthe cored and the adjacent .flm 3, and travelon tracks 9 on the bed 2, as shown-in-Figsyl and 2. Each such roller isbuilt up of a sleeve 10, keyed or otherwise non-rotatably secured tospindle 6, ,-and formed at its inner end with a'beveled flange 11.Threaded on thesleeve 10; is a second sleeve 12 that isv formed with. aflange 13 beveled oppositely to flange 11 so that when the two partsjust described are assembled a V-shaped groove is" formed therebetween.Suitable means are provided for locking the OHVIO, AssIeNon TO THECHANDLER 65 PRICE two :sleeves together in vadjusted longitudinalposition relative to each other, changes in such position varying thewidth of the V-shaped groove just referred to. Such means, as shown inthe drawing, comprise the longitudinal keyways orgrooves 14, formed inthe inner-sleeve, which are adapted to be engaged by pins, or screwstuds, not shown, which may be inserted in the sleeve, as is shown inFig. 1.

Mounted in the V-shaped groove between the beveled flanges 11 and "13 isan annular member or rim 15, which may, if desired, be provided with atire 16 of hard rubber or like material such rim having its lateralfaces beveled to correspond with said flanges 11 and 13. A radial pin 17is tightly fitted in sleeve 10 adjacent flange 11 and engages a recess18 inthe inner face of said member 15, whereby the latter is caused torotate uniformly with said sleeve and so in turn to impart a positiverotative movement to the roll, as is desirable. In other words, said pinacts as a sort of key, the recess 18, however, being large enough topermit of the relative movement of the parts hereinafter set forth.

From the foregoing description it will be seen that when the sleeves 10and 12 are adjusted so as to bring the flanges 11 and 13 as closelytogether as possible the rim 15 will be held fixedly therebetween, butupon moving flange 13 away from flange 11, and correspondingly Wideningthe groove therebetween the rim will be more or less loosely seated insuch groove. Depending upon the width of the latter, the portion of suchrim in contact with the track 9 will be forced radially inward towardthe spindle, as shown in Fig. 2, with the result that the effectivediameter, or rather radius, of the roller is correspondingly decreased.In this condition of the parts, the rim will have a rolling movement inthe groove, but its effective radius, i. e., that between the por tionof the surface that contacts with the track and the axis of the spindle,will at all timesremain the same. It will be understood of course thatthe rolls 3 are necessarily under spring, or other tension, which servesto pull the inking roll towards the form, the function of the supportingroll.- ers being simply to limit such pulling action and to cause theroller to rotate as it passes across the form without relying on therotative effect produced by direct contact of the roll itself with theform.

The foregoing construction provides an exceedingly simple and readymeans for adjusting the pressure with which the inking roll is thus heldagainst the form, and changes in the diameter of such roll may bereadily compensated for by rotating the outer sleeve 12 on the innersleeve 10 so as to vary the width of the groove between the respectivebeveled flanges carried by such sleeves, and thus allowing the rim ofthe roller to enter such groove more or less as occasion demands.

Other modes of applying the principle of my invention may be employedinstead of the one explained, change being made as regards the mechanismherein disclosed, provided the means'stated by any of the followingclaims or the equivalent of such stated means be employed.

I therefore particularly point out anddistinctly claim as my invention1-- 1. In an inking roll for a printing press, the combination with theroll spindle, of a roller for said spindle, said roller including a rimof fixed diameter surrounding said spindle, means for supportingsaid-rim on said spindle, said means being adjustable thus variously tosupport said rim from. concentric relation to said spindle to variabledegrees of eccentricity therewith, and means restraining rotativemovement of. said rim about said spindle.

2. In an inking roll for a printing press, the combination with the rollspindle, of a roller for said spindle, said roller including a rim offixed diameter surrounding said spindle, oppositely beveled flanges onsaid spindle between which said rim is supported, said flanges beingrelatively adjustable longitudinally of said spindle, whereby said rimmay be thus variously supported from concentric relation to said spindleto variable degrees of eccentricity therewith, and a radially projectingpin fixed with respect to said spindle and having loose engagement withsaid rim, whereby rotative movement of said rim about said spindle isrestrained.

Signed by me, this 12 day of September, 1921.

WILLIAM M. REIGHART.

